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<ul id="index">
  <li><a href="#NAME">NAME</a></li>
  <li><a href="#SYNOPSIS">SYNOPSIS</a></li>
  <li><a href="#DESCRIPTION">DESCRIPTION</a></li>
  <li><a href="#OPTIONS">OPTIONS</a></li>
  <li><a href="#SEE-ALSO">SEE ALSO</a></li>
  <li><a href="#HISTORY">HISTORY</a></li>
  <li><a href="#COPYRIGHT">COPYRIGHT</a></li>
</ul>

<h1 id="NAME">NAME</h1>

<p>openssl-dsaparam - DSA parameter manipulation and generation</p>

<h1 id="SYNOPSIS">SYNOPSIS</h1>

<p><b>openssl dsaparam</b> [<b>-help</b>] [<b>-inform</b> <b>DER</b>|<b>PEM</b>] [<b>-outform</b> <b>DER</b>|<b>PEM</b>] [<b>-in</b> <i>filename</i>] [<b>-out</b> <i>filename</i>] [<b>-noout</b>] [<b>-text</b>] [<b>-genkey</b>] [<b>-verbose</b>] [<b>-quiet</b>] [<b>-rand</b> <i>files</i>] [<b>-writerand</b> <i>file</i>] [<b>-engine</b> <i>id</i>] [<b>-provider</b> <i>name</i>] [<b>-provider-path</b> <i>path</i>] [<b>-propquery</b> <i>propq</i>] [<i>numbits</i>] [<i>numqbits</i>]</p>

<h1 id="DESCRIPTION">DESCRIPTION</h1>

<p>This command is used to manipulate or generate DSA parameter files.</p>

<p>DSA parameter generation can be a slow process and as a result the same set of DSA parameters is often used to generate several distinct keys.</p>

<h1 id="OPTIONS">OPTIONS</h1>

<dl>

<dt id="help"><b>-help</b></dt>
<dd>

<p>Print out a usage message.</p>

</dd>
<dt id="inform-DER-PEM"><b>-inform</b> <b>DER</b>|<b>PEM</b></dt>
<dd>

<p>The DSA parameters input format; unspecified by default. See <a href="../man1/openssl-format-options.html">openssl-format-options(1)</a> for details.</p>

</dd>
<dt id="outform-DER-PEM"><b>-outform</b> <b>DER</b>|<b>PEM</b></dt>
<dd>

<p>The DSA parameters output format; the default is <b>PEM</b>. See <a href="../man1/openssl-format-options.html">openssl-format-options(1)</a> for details.</p>

<p>Parameters are a sequence of <b>ASN.1 INTEGER</b>s: <b>p</b>, <b>q</b>, and <b>g</b>. This is compatible with RFC 2459 <b>DSS-Parms</b> structure.</p>

</dd>
<dt id="in-filename"><b>-in</b> <i>filename</i></dt>
<dd>

<p>This specifies the input filename to read parameters from or standard input if this option is not specified. If the <i>numbits</i> parameter is included then this option will be ignored.</p>

</dd>
<dt id="out-filename"><b>-out</b> <i>filename</i></dt>
<dd>

<p>This specifies the output filename parameters to. Standard output is used if this option is not present. The output filename should <b>not</b> be the same as the input filename.</p>

</dd>
<dt id="noout"><b>-noout</b></dt>
<dd>

<p>This option inhibits the output of the encoded version of the parameters.</p>

</dd>
<dt id="text"><b>-text</b></dt>
<dd>

<p>This option prints out the DSA parameters in human readable form.</p>

</dd>
<dt id="genkey"><b>-genkey</b></dt>
<dd>

<p>This option will generate a DSA either using the specified or generated parameters.</p>

</dd>
<dt id="verbose"><b>-verbose</b></dt>
<dd>

<p>Print extra details about the operations being performed.</p>

</dd>
<dt id="quiet"><b>-quiet</b></dt>
<dd>

<p>Print fewer details about the operations being performed, which may be handy during batch scripts and pipelines.</p>

</dd>
<dt id="rand-files--writerand-file"><b>-rand</b> <i>files</i>, <b>-writerand</b> <i>file</i></dt>
<dd>

<p>See <a href="../man1/openssl.html">&quot;Random State Options&quot; in openssl(1)</a> for details.</p>

</dd>
<dt id="engine-id"><b>-engine</b> <i>id</i></dt>
<dd>

<p>See <a href="../man1/openssl.html">&quot;Engine Options&quot; in openssl(1)</a>. This option is deprecated.</p>

</dd>
<dt id="numbits"><i>numbits</i></dt>
<dd>

<p>This optional argument specifies that a parameter set should be generated of size <i>numbits</i>. If this argument is included then the input file (if any) is ignored.</p>

</dd>
<dt id="numqbits"><i>numqbits</i></dt>
<dd>

<p>This optional argument specifies that a parameter set should be generated with a subprime parameter q of size <i>numqbits</i>. It must be the last argument. If this argument is included then the input file (if any) is ignored.</p>

</dd>
<dt id="provider-name"><b>-provider</b> <i>name</i></dt>
<dd>

</dd>
<dt id="provider-path-path"><b>-provider-path</b> <i>path</i></dt>
<dd>

</dd>
<dt id="propquery-propq"><b>-propquery</b> <i>propq</i></dt>
<dd>

<p>See <a href="../man1/openssl.html">&quot;Provider Options&quot; in openssl(1)</a>, <a href="../man7/provider.html">provider(7)</a>, and <a href="../man7/property.html">property(7)</a>.</p>

</dd>
</dl>

<h1 id="SEE-ALSO">SEE ALSO</h1>

<p><a href="../man1/openssl.html">openssl(1)</a>, <a href="../man1/openssl-pkeyparam.html">openssl-pkeyparam(1)</a>, <a href="../man1/openssl-gendsa.html">openssl-gendsa(1)</a>, <a href="../man1/openssl-dsa.html">openssl-dsa(1)</a>, <a href="../man1/openssl-genrsa.html">openssl-genrsa(1)</a>, <a href="../man1/openssl-rsa.html">openssl-rsa(1)</a></p>

<h1 id="HISTORY">HISTORY</h1>

<p>The <b>-engine</b> option was deprecated in OpenSSL 3.0.</p>

<p>The <b>-C</b> option was removed in OpenSSL 3.0.</p>

<h1 id="COPYRIGHT">COPYRIGHT</h1>

<p>Copyright 2000-2023 The OpenSSL Project Authors. All Rights Reserved.</p>

<p>Licensed under the Apache License 2.0 (the &quot;License&quot;). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>


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